Though there should be some balanced civs, because despite humanity having split into several new races, they arent planets of hats.
For some of the major races
Baseline humans: Most of your population has not been augmented by technology, there are a few advantages to this, medicine is more effective as it doesnt have to be custom tailered to you.
Grey: humans enhanced for life in space, you may choose, instead of starting out on a planet to instead start out in a space fleet, your people are more adept at space travel
Furmorph:Many of your people have, for one reason or another given themselves animal genes or other methods of looking like an animal. they come in a variety of forms but tend to have small genetic issues usually not noticable but will require more medicine.
Vatborn: living creatures that are completely artificial, come in a variety of forms but are often treated as second class citizens, they have however, more versatality than humans.
Virch:Your civilization is not physical but instead exists in a computer civilization...you probably keep to your own system most of the time, but trade is still profitable so you still want to open your wormhole.
Roid: generic term for robots, machines tend to be efficiant however often have very strong willpower...often can be a risk to them as they risk their lives to do trivial tasks, however, roids are hard to kill. also, because of the collapse of galactic civilization, the roids are confused as they no longer have Interstellar communication.